SciELO - Scientific Electronic Library Online

vol.71 número1-2Primer registro de cuatro especies del género Americabaetis (Ephemeroptera: Baetidae) para ArgentinaComentario sobre el VIII Congreso Argentino de Entomología, Bariloche, 17-20 de abril de 2012 índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




  • No hay articulos citadosCitado por SciELO

Links relacionados


Revista de la Sociedad Entomológica Argentina

versión impresa ISSN 0373-5680

Rev. Soc. Entomol. Argent. vol.71 no.1-2 Mendoza ene./jun. 2012



First record of the genus Kybos (Auchenorrhyncha: Cicadellidae: Typhlocybinae) for Argentina

Primer registro del género Kybos (Auchenorrhyncha: Cicadellidae: Typhlocybinae) para la Argentina


Catalano, María Inés*, Susana L. Paradell** and Ana M. de Remes Lenicov***

*, **, *** Universidad Nacional de La Plata, División Entomología, Facultad de Ciencias Naturales y Museo de La Plata, La Plata, Buenos Aires, Argentina.
* Current Address: Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Argentina; e-mail:
* Becario CONICET; ** Investigador CIC; *** Investigador CONICET

Recibido: 5-III-2012
Aceptado: 21-V-2012


ABSTRACT. The genus Kybos Fieber and the species K populi (Edwards) are recorded for the first time for the Neotropical region from specimens collected in Mendoza province, Argentina. This contribution adds taxonomic and bioecologic knowledge about this genus and its species.

KEY WORDS. First record; Diagnosis; Distribution; Host plant.

RESUMEN. El género Kybos Fieber y la especie K populi (Edwards) se citan por primera vez para la región Neotropical, a partir de ejemplares colectados en la provincia de Mendoza, Argentina. En esta contribución se reúne información relevante acerca de los aspectos taxonómicos y bioecológicos del género y la especie.

PALABRAS CLAVE. Primer registro; Diagnosis; Distribución; Plantas hospederas.


The leafhoppers belonging to the genus Kybos Fieber are among the largest in the tribe Empoascini. Kybos was formerly considered a subgenus of Empoasca Walsh but is currently regarded as a separate genus. The members of this genus are distinguished by having a broad, short, rounded head, and by having a large patch of long setae on the ventral surface of the styles (Ross, 1963). This genus is Holarctic and comprises about 120 species; they are usually monophagous on Salix, Populus, Alnus or Betula spp. (Mühlethaler et al., 2009). Within Typhlocybinae, 16 of 19 documented hopperburning species belong to the tribe Empoascini, especially the genus Empoasca Walsh and related genera. For example, Empoasca kraemeri Ross and Moore is the most important pest on common bean in Latin America, and E. fabae (Harris), is the most severe pest on alfalfa in the United States (Backus et al., 2005). Also, Empoasca papayae Oman, E. stevensi Young and E. decipiens Paoli are vectors of viruses and phytoplasmas (Nielson, 1979; Weintraub & Beanland, 2006). In Argentina, the tribe Empoascini is represented only by the genus Empoasca with 35 species (Young, 1953; Paradell, 1995).
The purpose of this contribution is to record for the first time the presence of the genus Kybos and the species Kybos populi (Edwards) in Argentina, to provide a brief diagnosis, and to illustrate the morphological and anatomical characters that allow their identification. The samples were collected in INTA (Instituto Nacional de Tecnología Agropecuaria) La Consulta, Mendoza province with a Malaise trap.

Kybos Fieber, 1866

Kybos Fieber, 1866: 508; type species Cicada smaragdula Fallén, 1806, by monotypy.
Empoasca (Kybos) DeLong, 1931: 14.

Diagnosis. Body robust, deep sutures on face, crown short and broad, anterior margin only slightly curved; pronotum broad, third apical cell in fore wing stalked; male pygofer appendage ornamented with ledges and furrows; anal tube appendage long, recurved, directed cephalad, tapering (Fig. 6); distal half of subgenital plate in lateral view gradually curved dorsad or abruptly bent dorsad or bent 90 degrees or more, with numerous macrosetae, scattered basally and uniseriate apically, and numerous, fine longer setae scattered throughout length of plate (Fig. 3), style with well defined distal part devoid of setae, serrated on inner margin, terminated by apical hook, with distinct subapical broadening and bearing hair-like setae 1.5-2.0 times longer than distal part of style (Fig. 4). The aedeagus is very variable, by far, the most important structure for diagnosing Kybos species.

Figs. 1-9. Kybos populi. Male: 1-6. 1, sternal apodeme 1S and 2S; 2, pygofer, lateral view; 3, subgenital plate; 4, style; 5, connective and aedeagus; 6, anal tube appendage. Female: 7-9. 7, sternite VII; 8, large valve; 9, small valve (Figs. 1: 10X; 2-7: 20X; 8-9: 40X). Scale = 0.1 mm.

Distribution. Holarctic; Eurasia 45 species, North America 76 species (Mühlethaler et al., 2009). New to Neotropical region, Argentina.

Kybos populi (Edwards, 1908)

Empoasca populi Edwards, 1908: 81. Kybos populi tremulae Zachtvatkin, 1953: 208; synonymized by Nast, 1972.
Kybos zaisanensis Mitjaev, 1969: 635; synonymized by Dworakowska, 1976.

Diagnosis. Body length: male 3.8-4.5 mm; female 4.0-4.7 mm; nymph 3.2. Coloration: greenish or yellowish.
Male: Second sternal apodemes (2S) twice as long as broad (Fig. 1). Pygofer process in male apically broadened (Fig. 2). Aedeagus without processes (Fig. 5). Female: Sternite VII with rounded median lobe with incision in middle (Fig. 7). Large valve of second valvulae bearing 8-10 teeth; with four or five denticles each (Fig. 8).
This species was described in more detail by Dworakowska (1976) and Mühlethaler et al. (2009).

Material examined. ARGENTINA. Mendoza: La Consulta 15 males and 10 females. November, 2009. Lanati col.

Distribution. Austria, Belgium, Bulgaria, Czech Republic, Danish mainland, Estonia, Finland, France, Germany, Great Britain, Greece, Hungary, Italy, Kazakhstan, Latvia, Republic of Moldova, Morocco, Netherlands, Norway, Poland, southern part of European Russia, central part of Siberia, Slovakia, Slovenia, Sweden, Switzerland, Ukraine, Yugoslavia (Mühlethaler et al., 2009). Introduced in Canada (Hamilton, 1983). New to Argentina.

Host plants. Populus alba, P. nigra, P. suaveolens, P. tremula (Mühlethaler et al., 2009).

Notes. Given the fact that this discovery suggests that K. populi has been introduced recently in Argentina, and that two of the recorded hosts, Populus alba and P. nigra, are widely planted in this country, the introduction of this species may potentially have a negative impact on the environment.


We would like to express our sincere gratitude to the late Ing. Silvio Lanati for his kindness in sending us the material he had collected for identification purposes. This research was supported by CONICET, CIC and Universidad Nacional de La Plata (UNLP) (Argentina).


1. BACKUS, E., M. SERRANO & C. RANGER. 2005. Mechanisms oh Hopperburn: An overview of Insect Taxonomy, Behavior, and Physiology. Annu. Rev. Entomol. 50: 125-151.         [ Links ]

2. DELONG, D. 1931. A revision of the American species of Empoasca know to occur north of Mexico. U.S.D.A. Tech. Bull. 231: 1-59.         [ Links ]

3. DWORAKOWSKA, I. 1976. Kybos Fieb., subgenus of Empoasca Walsh (Auchenorrhyncha, Cicadellidae, Typhlocybinae) in Palaearctic. Act. Zool. Cracoviensia 21: 387-463.         [ Links ]

4. EDWARDS, J. 1908. On some British Homoptera hitherto undescribed or unrecorded. Entomol. Mon. Mag. 44: 80-87.         [ Links ]

5. FALLÉN, C. 1806. Fòrsòk till de Svenska Cicad-Arternas uppstàllning och beskrifning. K. Svenska Vetensk. Acad Nya Handl 26: 229-253.         [ Links ]

6. FIEBER, F. 1866. Neue Gattungen und Arten in Homoptern (Cicadina Bur.). Verh. K. K. zool.-bot. Ges. Wien. 16: 497-516.         [ Links ]

7. HAMILTON, K. 1983. Introduced and native leafhoppers common to the old and new worlds (Rhynchota: Homoptera: Cicadellidae). Can. Ent. 115: 473-511.         [ Links ]

8. MITJAEV, I. 1969. New leaf-hoppers (Homoptera, Cicadinea) from Southern and Western Kazakhstan. Zool. Zh. 48(3): 564-669.         [ Links ]

9. MÜHLETHALER, R.; D. BURCKHARDT; P. LAURETER & P. NAGEL. 2009. Taxonomy and biogeography of Central European Kybos (Insecta, Hemiptera, Cicadellidae). Deut. Entomol. Z. 56 (1): 15-40.         [ Links ]

10. NAST, J. 1972. Palearctic Auchenorrhyncha (Homoptera): An annotated Check List. Institute of Zoology, Polish Academy of Sciences, Polish Scientific Publisher, Warsaw. 550 pp.         [ Links ]

11. NIELSON, M. 1979. Taxonomic relationships of leafhopper vectors of plant pathogens. In: Maramorosch, K. & K. Harris, editors, Leafhopper vectors and plant disease agents: 3-27. New York Academic Press.         [ Links ]

12. PARADELL, S. 1995. Estudio sistemático de los tiflocibinos argentinos del género Empoasca (Insecta: Homoptera: Cicadellidae). Rev. Soc. Entomol. Argent. 54 (1-4): 113-153.         [ Links ]

13. ROSS, H. 1963. An evolutionary outline of the Leafhopper genus Empoasca Subgenus Kybos, with a key to the Nearctic fauna (Hemiptera, Cicadellidae). Ann. Entomol. Soc. Am. 56: 202-223.         [ Links ]

14. WEINTRAUB, P. & L. BEANLAND. 2006. Insect vectors of phytoplasmas. Ann. Rev. Entomol. 51: 91-111.         [ Links ]

15. YOUNG, D. 1953. Argentine leafhoppers of the genus Empoasca (Homoptera: Cicadellidae). Acta Zool. Lill. 14: 375-396.         [ Links ]

16. ZACHTVATKIN, A. 1953. Studies of the Homoptera of the Turkey. I-III. Trans. Entomol. Soc. Lond. 97: 248-276.         [ Links ]

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons